Where is area code 581?

Area code 581 is in Quebec, Canada: all 778 of its exchanges on record are there. From abroad it is dialled +1 581, then the seven-digit number.

Is a 581 number mobile or landline?

Either: in the North American Numbering Plan the line type belongs to the exchange (the three digits after the area code), not to the area code. Of the 778 exchanges on record in 581, 144 (19%) were allocated as mobile, 526 (68%) as fixed line and 108 (14%) as VoIP. A number can have been ported since, to another carrier and even to another line type.

Which carriers have numbers in area code 581?

18 carriers hold exchanges in 581 on record; the most: Telus (182), Videotron (153) and Bell (113). These are the original allocations: with number portability, a number may be served by another carrier today, which only a live carrier lookup (an HLR or MNP query) can tell.

How do I validate a 581 phone number?

In E.164 a 581 number matches ^\+1581[2-9]\d{6}$: +1, the area code, a central office code that does not start with 0 or 1, then four digits. Written nationally it reads (581) 555-0123. The exchange patterns on this page narrow it to the exchanges allocated as mobile, fixed line or VoIP.

581

Area code 581

Quebec, Canada

National (581) 555-0123, E.164 +15815550123

How the 778 central office codes (exchanges) of area code 581 were allocated, from the North American Numbering Plan's records: to which carrier, as which line type. A 581 number is mobile, fixed line or VoIP according to its exchange, the three digits after the area code; the allocation is the original one (below).

At a glance

Country code: +1
Province: QC
Exchanges on record: 778
Carriers on record: 18

Exchanges of 581 by the line type they were allocated as

Mobile 144 (19%)
Fixed line 526 (68%)
VoIP 108 (14%)
778 exchanges on record

Most exchanges: Telus 182, Videotron 153, Bell 113.

Check a number

Valid fixed line or mobile number in Canada.

country code

581

area code

5550123

subscriber number

Country	Canada numbering plan
Line type	Fixed line or mobile
Carrier the block was allocated to	No carrier on record for this prefix
E.164	+15815550123
International	+1 581-555-0123
National	(581) 555-0123
RFC 3966	tel:+1-581-555-0123

Source: Canadian Numbering Administrator (CNAC); North American Numbering Plan Administrator (NANPA); National numbering plan: Canada (ITU)

The example is 581-555-0123: 555-0100 to 555-0199 are set aside for fictional use in every area code.

The exchange map

Every exchange of 581, by the line type it was allocated as

One cell per exchange: blocks 581 2xx to 581 9xx; in each block the row is the tens digit, the column the units digit.

Mobile 144
Fixed line 526
VoIP 108
Not on record 22

Formats and patterns

E.164	+15815550123
International	+1 581-555-0123
National	(581) 555-0123
RFC 3966 (tel: URI)	tel:+1-581-555-0123

Any 581 number, in E.164

^\+1581[2-9]\d{6}$

+1, the area code, a central office code that does not start with 0 or 1, then four digits.

Mobile exchanges (144 on record)

^\+1581(?:2(?:3[0-5]|46)|3(?:0[5-9]|1[34]|37|49|72|9[7-9])|4(?:0[0-289]|[38]9|4[3-7]|5[39]|6[46-9]|7[01]|90)|5(?:25|57|[68]0|7[2-9])|6(?:2[0-4]|6[1457-9]|7[0-8]|8[68]|99)|7(?:2[124-9]|3[5-9]|4[4-8]|61|77|8[07])|8(?:49|71|8[1-9]|9[489])|9(?:09|1[02]|2[027-9]|55|7[7-9]|8[02-9]|9\d))\d{4}$

Fixed line exchanges (526 on record)

^\+1581(?:2(?:0[16-9]|1[02-9]|2[03-9]|3[6-9]|4[0-57-9]|[5689]\d|7[0-24-9])|3(?:0[0-4]|1[25-9]|[258]\d|3[0-24-689]|4[0-8]|6[0-689]|7[013-9]|9[0-6])|4(?:0[457]|1[2-79]|2\d|30|4[89]|5[0-24-8]|6[1-3]|7[235-9]|8[2-8]|9[1-8])|5(?:10|2[0-46-9]|3[0-689]|[49]\d|5[0-4689]|6[1-9]|7[01]|8[2-9])|6(?:[03-5]\d|1[2-9]|2[5-9]|60|79|8[07]|9[1-8])|7(?:1[2-9]|2[03]|3[0-4]|4[0-39]|5\d|6[02-9]|7[0-689]|8[2-689]|9[0-5])|8(?:1[3-9]|[2356]\d|4[0-8])|9(?:08|1[3-9]|2[13-6]|[36]\d|4[013-9]|5[1-467]|7[0-5]|81))\d{4}$

VoIP exchanges (108 on record)

^\+1581(?:2(?:0[02-5]|2[12])|333|4(?:0[36]|10|3[1-8]|4[0-2]|65|74|8[01]|99)|5(?:0\d|1[2-9])|6(?:6[236]|8[1-59]|90)|7(?:0\d|10|81|9[6-9])|8(?:0\d|12|7[02-9]|80|9[0-35-7])|9(?:0[0-7]|42))\d{4}$

The exchange patterns follow the original allocations; a number ported since keeps its digits but not necessarily its carrier or its line type.

Carriers and their exchanges

Every carrier holding exchanges in 581, with the exchanges allocated to it (the three digits after the area code).

Carrier	Exchanges	Mobile	Fixed line	VoIP	Exchanges held
Telus	182	40	142	0	212–214, 216–220, 230–235, 246–254, 351–365, 368–369, 377–381, 538–554, 572–580, 620–639, 697–698, 712–720, 753, 813–848, 865, 867, 881–888, 913–919, 921, 923–924, 926, 945–949, 951–954, 956–957, 989–999
Videotron	153	35	118	0	223–227, 229, 300, 312, 314–315, 320–329, 332, 370–371, 373–376, 419–421, 448–452, 454–458, 490–491, 558, 560–563, 600, 640–660, 664–665, 667–680, 740–749, 762–773, 775–776, 849–864, 908–910, 930–941, 943–944, 978–988
Bell	113	32	73	8	261–262, 305–309, 313, 337, 339, 343, 346, 348–350, 372, 397–399, 407, 431, 433–435, 437–438, 440, 442–447, 453, 459, 461–464, 466–467, 482–488, 492–497, 520–529, 603–609, 612–613, 661, 691–696, 730–739, 754–761, 782–786, 788–795, 894, 912
Telecommunications Xittel	111	0	111	0	236–245, 255–260, 263–272, 274–299, 301–304, 330–331, 334–336, 338, 340–342, 344–345, 347, 382–396, 422–429, 582–599, 601–602
Iristel	92	11	0	81	200, 202–205, 221–222, 333, 402–403, 408–410, 432, 436, 439, 441, 465, 468–471, 474, 480–481, 489, 499, 500–509, 512–519, 685, 690, 700–710, 780, 796–799, 800–809, 812, 870–880, 890–893, 895, 900, 942
Distributel	29	0	29	0	201, 316–319, 559, 564–571, 778–779, 925, 960–971
ISP Telecom	20	0	20	0	206–207, 430, 472–473, 475–479, 498, 614–619, 687, 723, 975
Fibernetics	19	0	0	19	406, 662–663, 666, 681–684, 689, 781, 896–897, 901–907
Rogers	17	14	3	0	400–401, 557, 686, 699, 787, 866, 868–869, 889, 898–899, 927–929, 955, 977
Fido	12	12	0	0	688, 721–722, 724–729, 777, 920, 922
Comwave Networks	10	0	10	0	530–536, 750–752
IVIC Telecom	10	0	10	0	208–210, 228, 405, 413–417
SSi Micro	3	0	3	0	972–974
Sogetel	2	0	2	0	215, 510
Telebec	2	0	2	0	412, 556
Cooptel	1	0	1	0	774
IXICA Communications	1	0	1	0	404
Zayo	1	0	1	0	366

Questions developers ask

Where is area code 581?: Area code 581 is in Quebec, Canada: all 778 of its exchanges on record are there. From abroad it is dialled +1 581, then the seven-digit number.
Is a 581 number mobile or landline?: Either: in the North American Numbering Plan the line type belongs to the exchange (the three digits after the area code), not to the area code. Of the 778 exchanges on record in 581, 144 (19%) were allocated as mobile, 526 (68%) as fixed line and 108 (14%) as VoIP. A number can have been ported since, to another carrier and even to another line type.
Which carriers have numbers in area code 581?: 18 carriers hold exchanges in 581 on record; the most: Telus (182), Videotron (153) and Bell (113). These are the original allocations: with number portability, a number may be served by another carrier today, which only a live carrier lookup (an HLR or MNP query) can tell.
How do I validate a 581 phone number?: In E.164 a 581 number matches ^\+1581[2-9]\d{6}$: +1, the area code, a central office code that does not start with 0 or 1, then four digits. Written nationally it reads (581) 555-0123. The exchange patterns on this page narrow it to the exchanges allocated as mobile, fixed line or VoIP.